92 Sleekcraft 26' Enforcer 454 merc - can't get past 3800 rpm on 19P (same with 21P)
06-02-2017, 06:02 PM
#83
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Just got all my gaskets. Was at a boat mech shop and mech said shifty fuel could have caused the head gasket blowout. I told him I use reg octane 87 and he said that is what caused it???? Can that really do it????
06-02-2017, 06:25 PM
#85
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How much fuel sat 2 years and how much did you add new this year? Even if it was all old, that isn't that old. Could possibly been a contributor. Enough for now. Head gasket surfaces...
06-02-2017, 06:31 PM
#86
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We need to see pics of the damage.
06-02-2017, 09:10 PM
#87
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Not good. The head has a burnt section between cylinders 3 and 5. So a few questions now:
1) can this much damage really happy in like 30-60 seconds of working the engine hard (overload)???? Or could it be that I've had this for some time which maybe caused my low power????
2) is this repairable, or should I look for a new/used head???? If I need a new one, what is the part number I'm looking for when I start calling wrecking yards? Will any head from a 454 work?? Does it need to be 100% the same as the other side being that I'm not planning to do the other side.
3) BTW - I did the water test. One side held 100%. When I turned it over and tried, the other side has 2 of the 4 with slow water leaks through the valves. What does that mean????
Thanks
1) can this much damage really happy in like 30-60 seconds of working the engine hard (overload)???? Or could it be that I've had this for some time which maybe caused my low power????
2) is this repairable, or should I look for a new/used head???? If I need a new one, what is the part number I'm looking for when I start calling wrecking yards? Will any head from a 454 work?? Does it need to be 100% the same as the other side being that I'm not planning to do the other side.
3) BTW - I did the water test. One side held 100%. When I turned it over and tried, the other side has 2 of the 4 with slow water leaks through the valves. What does that mean????
Thanks
06-02-2017, 09:52 PM
#88
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Yes, can be fixed. Call around locally as cast iron BBC heads are expensive to ship anywhere,
06-02-2017, 10:02 PM
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Dumb question. But can I JB Weld this thing? Or any other home options? I've got a buddy who works in a metal yard and he has a welder at home. Can this be welded? Thanks
06-02-2017, 10:11 PM
#90
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No. Both dumb. Not dumb to ask though. Cast iron has to be put in an oven and welded on the oven. Google cast iron welding.
